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Many of the tablets were ancient, dating back as far as 1706.Sent a copy of this to Amelia, and at the same time made all arrangements, dating my letter 1745.

A form of radiometric dating used to determine the age of organic remains in ancient objects, such as archaeological specimens, on the basis of the half-life of carbon-14 and a comparison between the ratio of carbon-12 to carbon-14 in a sample of the remains to the known ratio in living organisms. A technique for measuring the age of organic remains based on the rate of decay of carbon 14.

The carbon 14 present in an organism at the time of its death decays at a steady rate, and so the age of the remains can be calculated from the amount of carbon 14 that is left. The cells of all living things contain carbon atoms that they take in from their environment.

Randolph Quirk, Emeritus Quain Professor of English Language and Literature at University College, London said the book was "a magnificent achievement of quite extraordinary value...

perhaps the single most significant tool ever devised for investigating semantic, social and intellectual history".

The peanut, or ground-nut (Arachis hypogaea), is another widely-cultivated plant, dating from pre-Columbian times.

A square dance for four couples, dating from the 18th century.

to the Byzantine period and the status of the jar within the ground and its large size indicate that it was used for grain storage, pointing out that the jar and other findings transferred to Homs Antiquities Department.

to the ancient historic eras of Misopotamia (Ancient Iraq), some of them dating back to the Somerian era and others to the Acadian, Babylonian, Firthian, Akhmenian, Sasanian or Islamic eras, whilst it comprises the world's most ancient archaeological hill, called "Al-Obali Hill", dating back to 6,000 BC.

"For example, there are 265 ways to say 'immediately'. The group found that words have different survival rates – maybe 7,000 words have been in English since the very early days and others lasted only for a few years.